Yoon Song Ah works as a marketer for a cosmetics brand. She enjoys her job and dreams of launching her own brand someday. Chae Hyun Seung is a fellow marketer who becomes attracted to Yoon Song Ah. He tries to develop a romantic relationship but Yoon Song Ah rebuffs his advances, not wishing to date younger men.
In 1993, Jisu and Jaehyeon, who met for the first time at the protest scene and being a first love to each other. After 26 years, Jisu and Jaehyeon accidently reunite.